One-Step Addition of Sulfonic Acids to Acetylene Derivatives: An Alternative and Stereoselective Approach to Vinyl Triflates and Fluorosulfonates
作者:Aleksander V. Vasilyev、Stéphane Walspurger、Stefan Chassaing、Patrick Pale、Jean Sommer
DOI:10.1002/ejoc.200700650
日期:2007.12
Acetylenic acids and esters as well as acetylenic ketones were efficiently and stereoselectively converted in one step to the corresponding vinyl triflates or fluorosulfonates in triflic or fluorosulfonic acids. Depending on the reaction conditions the E or the Z isomer can be obtained very conveniently in high isolated yields. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
乙炔酸和酯以及乙炔酮在一个步骤中被有效且立体选择性地转化为三氟甲磺酸或氟磺酸中相应的乙烯基三氟甲磺酸酯或氟磺酸酯。根据反应条件,可以非常方便地以高分离产率获得 E 或 Z 异构体。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)